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m in (-oo:+oo)
(2/3)*(m-8) = 54 // - 54
(2/3)*(m-8)-54 = 0
2/3*(m-8)-54 = 0
2/3*(m-8)-54 = 0
2/3*m-178/3 = 0
2/3*m-178/3 = 0
2/3*m-178/3 = 0 // + 178/3
2/3*m = 178/3 // : 2/3
m = 178/3/2/3
m = 89
m = 89
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